Burden, Ernest E., 1934-, author
McGraw-Hill, 1981
Buku Teks
Burden, Ernest E., 1934-, author
McGraw-Hill, 1994
Buku Teks
Geddes-Brown, Leslie, author
Pageone , 2002
Buku Referensi
Geddes-Brown, Leslie, author
Page One Publishing, 2002
Buku Referensi
Dale, Nell, author
D.C. Heath And Co., 1987
Buku Teks